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One way to fix an overheating graphics chip in an iMac
I would definitely exhaust (no pun intended) all cleaning options to return air-flow to stock condition before resorting to opening up new ventilation holes. This would involve more than just cleaning the fans and the various shaped-bits that route air—some attention would have to be paid to dirt/dust build-up on all the components in the path of the air flow. Even a small, barely visible build-up of dust on a component can drastically affect air-speed around that component. Multiply that by several components on the Mobo and you get a congested but apparently obstruction free computer. You can get away with dusty components on a computer with more free air space (the typical PC or even the inside of a MacPro) but with literally no free air space, an iMac's interior can become an aerodynamic obstacle course is short order. |
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